用单词的适当形式填空。

1. The boy is the____________(nine) to make the speech.

2. It is ____________(good) to teach a man to fish than to give him fish.

3. Please take another way. This road _____________(mend).

4. I can’t draw as_____________ (better) as Mary does.

5. Why not_____________(sand) an e-mail to her instead  of

    _____________(write) a letter.

我国沿海某地大潮升3.5m，小潮升2.8m，平均海面2.3m，则该地小潮日低潮潮高约为（）。

A．3.5m

B．2.8m

C．2.3m

D．1.8m